Trismelasmos valentini is a moth in the family Cossidae. It was described by Yakovlev in 2011. It is found in New Guinea.
The length of the forewings is 15–20 mm., 2011: Two new species of the goat moths (Lepidoptera, Cossidae) from New Guinea. Amurian zoological journal III(3): 284-286. Full article: .
References
Natural History Museum Lepidoptera generic names catalog